This LP is not quadraphonic. This LP is "Phase4 Stereo. Phase 4 Stereo is not a quadraphonic, seePhase 4 Stereo was a recording process created by the U.K. Decca Records label in 1961. The process was used on U.K. Decca recordings and the likes of its American subsidiary London Records during the 1960s.The concept of Phase 4 Stereo has no connection with Quadraphonic sound or "four channel stereo." But because there is a lot of space, the records may also give.Approximately two hundred recordings were released with the process, including popular music, "gimmick" records engineered to make the sound travel speaker to speakers, records featuring percussion effects, and historical sound effect records. In 1964, a light classical phase 4 "Concert Series" was produced.In 1996, a CD, The Phase 4 Experience, which was released with recordings from 1966 to 1979 (London 444 788-2 LPX / PY 871).A space themed version An Astromusical Odyssey was by John Keating which included songs from the late sixties to the early seventies. Selection can be heard on Youtube.Wolfgang Germany Quadmaster